Quetiapine pfizer e56 manufacturer?

Short answer: On quetiapine tablets, an imprint that says “PFIZER” usually indicates Pfizer as the manufacturer, and “E56” is typically an internal lot or imprint code.

A few notes:
- The original brand name Seroquel was from AstraZeneca; since quetiapine is generic now, multiple manufacturers make it in different regions, not just Pfizer.
- To be certain, it’s best to verify with a pharmacist or use a pill-identification resource, since imprint codes can vary by country and strength.

If you can share the tablet’s strength (mg), shape, color, and the exact markings on both sides, I can help confirm more specifically.